Расположите пропущенные предложения в таком порядке чтобы получился связный текст. Building a road 1...: ответ на тест 911495 - Английский язык

Расположите пропущенные предложения в таком порядке, чтобы получился связный текст.
1_______. The aggregate is both coarse (e.g. stones and gravel) and fine (e.g. sand).2_______.
1) Put two shovelfuls of sand into a wheel-barrow.
2) Add a shovelful of cement.
3) Mix these thoroughly with a shovel.
4) Add four shovelfuls of gravel. Mix thoroughly.
5) 3_______. Add a little water with a hose. CAUTION: Do not add all of the water – only a little.
6) Mix the materials thoroughly.
7) 4_______.

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Cement is the most important component of concrete. 1_______. Concrete may be considered an artificial conglomerate of “crushed stone, gravel or similar inert material with a mortar”. A mortar is a mixture of sand, screenings or similar inert particles with cement and water. 2_______. The most accurate method of measuring proportions is to weigh the required quantities of each material. This may be done whether the proportions are based upon volumes or weights. 3_______. It is also widely used in large building constructions. 4_______.

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1_______. Glass blowing was probably developed in the first century BC in Syria. 2_______.
The Roman Empire used glass more than any other ancient civilisation. 3_______. There were people, however, who regarded it as inferior to materials such as gold and silver. Gallenius, a Roman emperor, used to drink from a glass vessel because he believed that there was nothing less common than glass.
4_______. There was so much demand for Venetian glass in Europe that glassworkers of the island of Murano were forbidden to visit Venice or teach their secrets to outsiders.

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This tank has two pipes and a cover. The tank is made of plastic. The cover is made of wood. The pipe at the top is made of plastic. The pipe at the bottom is made of copper.
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The pipe at the bottom is made of …

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Pipes are made of three main materials:
1) Metal. This is the strongest material, but it is also the heaviest, and the most rigid. It is also the most expensive of the three materials.
2) Rubber. This is the most flexible of three materials. But it is the weakest.
3) Plastic. This is the lightest material. It is also the least expensive of the three.
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Metal is …

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Robert Stephenson, the son of George Stephenson was a British civil engineer. He is mostly well-known for the construction of several notable bridges.
He was born in 1803. He was educated in Newcastle and at the University of Edinburgh. In 1829 he assisted his father in constructing a locomotive known as the Rocket, and four years later he was appointed construction engineer of the Birmingham and London Railway, completed in 1838.
Stephenson built several famous bridges, including the Victoria Bridge in England, the Britannia Bridge in Wales, two bridges across the Nile in Egypt and the Victoria Bridge in Montreal, Canada.
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Robert Stephenson is mostly well-known for the construction of …